code: def standard_session() -> api.Session:
      return api.Session(
          master=_MASTER, user=None, auth=None, cert=None
      )
  
file_path: determined/harness/tests/determined/common/storage/test_s3.py
imports: import os
  import boto3
  import moto
  import pytest
  from determined.common import api, storage
  from determined.common.experimental import checkpoint
  from tests.fixtures import api_responses
label_desc: Use image node_id 1 for calling a global function with example usage: standard_session() and returns: api